Phase transformation and electrical resistivity of tetracyanoethylene under pressure
P Ch Sahu K Govinda Rajan Mohammad Yousuf R Mukhopadhyay S L Chaplot K R Rao
Click here to view fulltext PDF
Permanent link:
https://www.ias.ac.in/article/fulltext/pram/033/06/0667-0672
This paper reports the phase transformation behaviour of tetracyanoethylene (TCNE) under pressure as revealed by AC electrical resistivity, its time evolution and X-ray diffraction studies. An irreversible transformation from monoclinic to cubic phase occurs at 2.1±0.1 GPa and is indicated by a sharp resistivity drop at this pressure. The time evolution of resistivity studies indicate that this transformation occurs via an intermediate phase having resistivity higher than either of the two crystalline phases. Finally, the kinetics of phase transformations obtained by time evolution of resistivity is compared with the X-ray studies on the pressure quenched TCNE.
P Ch Sahu1 K Govinda Rajan1 Mohammad Yousuf1 R Mukhopadhyay1 2 S L Chaplot1 2 K R Rao1 2
Volume 97, 2023
All articles
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode
© 2022-2023 Indian Academy of Sciences, Bengaluru.